1 kg of coffee, originally at 95°C, is placed into an insulating cup. You wish to cool the coffee down to 80°C. How much ice, whose initial temperature is -5°C should you place into the coffee to achieve this? Let: J Ccof fee = CH2O = 4186 kg K J 2100 kg K J Lice = 334, 000 kg Cice = %3D

1 kg of coffee, originally at 95°C, is placed into an insulating cup. You wish to cool the coffee down to 80°C. How much ice, whose initial temperature is -5°C should you place into the coffee to achieve this? Let: J Ccof fee = CH2O = 4186 kg K J 2100 kg K J Lice = 334, 000 kg Cice = %3D

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter5: Temperature And Heat

Section: Chapter Questions

Problem 24E: If the gas in Exercise 23 is initially at room temperature (20C) and is heated in an isobaric...

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Concept explainers

Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.

Question

1 kg of coffee, originally at 95°C, is placed into an insulating cup. You
wish to cool the coffee down to 80°C. How much ice, whose initial temperature is -5°C
should you place into the coffee to achieve this? Let:
J
Ccoffee = CH2O = 4186
kg K
J
Cice = 2100
kg K
J
Lice = 334, 000
kg

Expert Solution

Step 1

$G i v e n, m_{c} = 1 k g T_{c} = 95 ° C T_{f} = 80 ° C T_{i} = - 5 ° C C_{c o f f e e} = 4186 \frac{J}{k g . K} C_{i c e} = 2100 \frac{J}{k g . K} L_{i c e} = 334000 \frac{J}{k g}$

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